Yes, I tried: "text ivrs_ioapic[4]=00:14.0 ivrs_ioapic[5]=00:00.2 radeon.modeset=0 amdgpu.runpm=0"
"text ivrs_ioapic[4]=00:14.0 ivrs_ioapic[5]=00:00.2 clocksource=hpet iommu=on amd_iommu=on amdgpu.dc=1" "idle=nomwait iommu=pt amd_iommu=on rcu_nocbs=0-7 pcie-aspm=off ivrs_ioapic[4]=00:14.0 ivrs_ioapic[5]=00:00.2 amdgpu.dc=1" ... Tried 5.0 mainline kernel also, same result, suspend works, but graphics is slow and bumps cpu on system monitor to 10-50% just for moving windows in gnome, unlike pci=noacpi when cpu never goes anywhere near 10% for usual DE manipulations. Also if run with ivrs_ioapic params, switcheroo service fails with message "switcheroo-cont[3648]: switcheroo-control could not query vga_switcheroo status: Operation not permitted". This might be interaction with this secure boot bug: https://bugs.launchpad.net/ubuntu/+source/switcheroo- control/+bug/1768988 BTW if I disable secure boot it doesn't boot at all with ivrs_ioapic params set. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-firmware in Ubuntu. https://bugs.launchpad.net/bugs/1776563 Title: Acer Aspire A315 IOAPIC failure on Ubuntu 18.04, kernel hangs, can't load, kernel freeze (AMD Ryzen 5/Radeon/Raven) / AMDGPU Hybrid crash Status in amd: Fix Released Status in Linux: Incomplete Status in linux package in Ubuntu: Triaged Status in linux-firmware package in Ubuntu: Confirmed Bug description: CPU: Ryzen 5 2500U VGA: Radeon 535 Notebook: Acer Aspire A315 This is a brand new notebook on the market with Ryzen 5/Radeon. The default kernel of Ubuntu(18.04) hangs at loading with message: tsc: Refined TSC clocksource calibration: 1996.250 MHz clocksource: tsc: mask: 0xffffffffffffffff max_cycles: (...), max_idle_ns: (...) Soft lockup Using pci=noacpi kernel parameter kernel loads without any problem but my notebook produces more heat than on Win10. If I know right Acer notebooks need ACPI to the correct power management. The same thing happens on mainline 4.17,4.18rc1-2. BIOS upgrade to the latest version: 1.08 hasn't helped This problem has been reported upstream: https://bugzilla.kernel.org/show_bug.cgi?id=200087 The latest correctly working kernel was 4.13.* but the heat problem was present with this too. To manage notifications about this bug go to: https://bugs.launchpad.net/amd/+bug/1776563/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
